Brick and tile kiln



ct. 8, 1935. A, HABLA 2,016,996

BRICK AND TILE KILN Filed Sept 25, 1934 2 Sheets-Sheet l Q/ZW OM Get. 8, 1935. A. HABLA 2,016,996

BRICK AND TILE KILN Filed Sept. 25, 1934 2 Sheets-Sheet 2 g Y: o

\\\\\\ u E5 v Patented Oct. 8, 1935 ET STATES PATENT OFFICE BRICK AND TILE KILN Alois Habla, Handsworth, Birmingham,

England Application September 25, 1934, Serial No. 745,469 In Great Britain September 27, 1933 6 Claims. (Cl. 25134) is divided into chambers by division walls orpartitions disposed so as to cause the fire to progress in two or more simultaneous zig-zag circuits.

In the present invention the idea of the double or multiple zig-zag firing circuits is applied to kilns in which the division or partition walls are in the nature of grates on to which the fuel can be charged and air for promoting or supporting combustion of that fuel can be supplied without 5 the fuel contacting with the goods in the chambers formed between the grates.

The invention thus combines the advantages of the grate-fired kilns: that the fuel is burnt on the grates instead of amongst the goods in the 20 chambers, with the economy in space and narrow and long firing spaces, and other advantages of the double or multiple zig-zag firing circuit kilns.

I may construct the grates either of a tem- 25 porary or permanen nature. If they are temporary and taken down when the goods are discharged from the kiln chambers, then I prefer to build them of green bricks; but if they are of a more permanent character I preler to use 30 fire bricks or other suitable refractory material for their erection.

In one example of construction the grates and connecting passages are built so as to enclose at each end of the kiln one or more narrow chambers extending completely across between the main walls. Alternating with these enclosed chambers are a number of pairs of chambers on each side of the central wall, the two compartments of each pair being separated by a longi- 40 tudinal grate or connecting gas passage. The fuel is charged on to these grate walls from feed passages in the usual way and combustion takes place around them, the gases travelling outwardly in opposite directions from the centre of one enclosing grate around the ends and back towards the central longitudinally directed grate or gas passage. These currents are determined by appropriately arranged fiues pulling the gases in the desired directions as is well known for 50 zig-zag circuits.

The gases thus fiow through the kiln in double, waved paths or zig-zags, but the fuel is burnt on the grates instead of in the chambers.

In order to enable the design and working of 55 the invention to be more clearly understood I have appended drawings illustrating the invention applied to kilns of slightly-varying construction and showing types of grates used as division Walls.

Figure 1 is a sectional plan of a twenty cham- 5 ber double zig-zag kiln.

Figure 2 is a similar view of a double zig-zag kiln in which the main groups of compartments are divided by the grates and temporary walls into a number of smaller zig-zag chambers. 10

Figure 3 is a plan of settings used as division walls and in the lower part of grates combined with these division walls.

Figure 4 shows a cross section through a grate.

Figure 5 is a similar view but showing a thin division wall combined with the grate.

Figure 6 shows a similar view of two grates combined as one division wall.

Figure 7 is a longitudinal section through a grate. Figure 8 is a section through part of a kiln showing the permanent division walls built as grates with the division walls between them also built as grates.

Figure 9 is a longitudinal sectional view thereof.

The design of the grates shown is generally known in the art: they can be erected in various ways.

In Figure 1 of the drawings the narrow and long chambers extending from main wall to main wall across the kiln are shown at a, they may be formed with grates I) along the enclosin walls and with grates or gas passages between them at c.

In the right hand upper part of Figure 1 grates d are arranged along the enclosing walls and on each side of thin, temporary division walls e. In the left hand upper part of the figure, additional temporary division grates are shown at f. In the lower half of the figure on the right permanent division walls 9 have grates h on their sides but otherwise these chambers iii to l9 resemble 2 to 5 above. In the left hand lower part of the figure the permanent division walls g have no grates at their sides but grates are arranged in the passage ways at a and there are cross grates or gas passages at k. The flue arrangements, operated by dampers m communicating with the central hot air flue 'n. and the draught arrangements from a fan or chimney 0 may follow known practice in double zig-zag circuit kilns.

In Figure 2 the permanent division walls g have grates on each side and thin temporary division walls 6 are erected at the ends of these and have grates on one side only (similar to Figure 5) in the upper part of the figureand on both sides (similar to the lower part of Figure 3) in the lower half of the figure. A more elaborate waved or zig-zag system is illustrated.

I claim:

1. A brick or tile kiln having an arrangement of division walls forming chambers, a plurality of zig zag firing circuits through the chambers partitioned by said division walls, and grates combined with the division walls on which fuel is supported out of contact with the goods under treatment in the chambers. V

2. A brick or tile kiln divided into chambers by division walls arranged within main enclosing walls, a plurality of tortuous or zig-zag firing circuits for these chambers, and grates on the sides of the said division walls on which fuel is supported and burnt without the burning fuel coming into contactwith the bulk'of goods set up in said chambers.

Y 3. A brick or tile kiln having a space enclosed by the main walls divided into a. number of chambers by grates on which fuel is supported and burnt out of contact with the mass of goods in the chambers, and having a plurality of tortuous firing circuits through the various chambers of the kiln formed by the grates which act as division walls.

4. A brick or tile kiln in which main enclosing walls have an arrangement of division walls therein of permanent character built in the space enclosed by said walls, said kiln being divided into 5 r 5. A brick and tile kiln comprising in combination enclosing walls and means for dividing the kiln into a number of chambers and causing the firing of the chambers to follow a plurality of tortuous circuits, grates for supporting fuel in said 15 dividing means, means for circulating air to support combustion of the fuel, and means for circulating the hot gases from chamber to chamber as required.

6. A brick and tile kiln comprising enclosing 20 walls and a number of dividing walls therein forming chambers for the reception of the goods to be treated, a plurality of zig-zag circuits for the firing of the kiln, passage ways in said Walls, and grates in said passage ways for supporting fuel 25 out of contact with the goods in the chambers.

ALOIS HABLA. 

